基于分子矩阵的炼油过程的全厂模拟

针对复杂的炼油生产过程及其物流成分，采用分子矩阵表征相关的物流分子组成，对催化重整、加氢脱硫、汽油稳定塔和油品调和四个过程建立了基于分子矩阵的过程模型. 通过物性-分子矩阵转换关系可以方便地从已知物流物性计算分子矩阵以及由分子矩阵得到物流物性. 基于分子矩阵的模型计算不仅可以提供比传统虚拟组分模型更为详尽的分子信息，而且可以统一传统建模中不同过程虚拟组分和集总参数之间的差异，将多个过程模型集成实现全厂的模拟.

Modelling and Optimization Based on the Molecular Matrix for the Overall Refinery Operation

To complicated refining processes and stream components, molecular matrices are used to express refining stream compositions. Process models based on molecular matrices are built for catalytic reforming unit, naphtha hydro-treating unit, gasoline stabilizer unit and gasoline blending unit. Molecular compositions can be obtained from stream bulk properties with the conversion model and vice versa. The process models on the basis of molecular matrices can not only give out more detailed molecular information, but also form a common component base for the traditional pseudo-component models in the distillation processes and lumped models in the reaction processes, which makes it possible to integrate multi-process models into an overall plant modeling.